Here are the answers to the free Cisco and CompTIA questions from Wednesday, February 30!

CCENT / Network+ Certification:

Does Layer 2 of the OSI model perform error detection, error correction, both, or neither?

Answer: The Data Link layer is capable of error detection, but not error correction.


Security+ Certification:

Briefly describe the purpose of a "SYN cookie".

Answer: One defense against SYN attacks, a SYN cookie verifies the client address before actually allocating resources to that client.


CCNA Certification:

What type of OSPF router is defined as "at least one interface in Area 0, and connecting other areas to Area 0"?

A. ASBR

B. ABR

C. Internal

D. Backbone

E. External

Answer: B. That's the textbook definition of an Area Border Router (ABR).



CCNP Certification / BSCI Exam:

What term is used for the number "2" shown in the below commands?

R2(config)#router rip
R2(config-router)#redistribute ospf 1 metric 2

A. distance

B. administrative distance

C. distance

D. variance

E. seed metric

F. process number

Answer: E. The "2" is the seed metric. The "1" in the redistribute statement is the OSPF process number whose routes are being redistributed into RIP.


CCNP Certification / BCMSN Exam:

In a typical Network Management block, what switch layers are represented?

A. Access

B. Distribution

C. Core

Answers: A, B. In addition to network management devices, both Access and Distribution switches will be found here.


New questions, a new free CCNA 640-802 tutorial, and a new Networking Troubleshooting Challenge to come later today!

To your success,

Chris Bryant
CCIE #12933
http://www.thebryantadvantage.com/